Sealed Connectors | McMaster-Carr

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3,959 Products

Electrical

Electrical Plugs

Pair with sockets or receptacles to transmit power or data

397 products

Wire Splices

Join wire and protect the connection

61 products

Electrical Receptacles

Install in a wall or panel to transmit power or data to plugs or sockets

407 products

Electrical Sockets

Pair with plugs or receptacles to transmit power or data

244 products

Electrical Cord Locks

Cover mated connectors on extension cords to prevent disconnection

1 product

Terminals

Attach wire endings everywhere from circuit breaker panels to batteries

164 products

Terminal and Splice Kits

Maintain a supply of extra terminals and splices to join and terminate wire

7 products

Terminal Blocks

Mate with terminals to complete circuits in control panels, motors, and small machines

47 products

Electrical Adapters

Change electrical connectors to another type, size, or gender

38 products

Electrical Cords

Connect equipment and devices to a power supply

953 products

Electrical Connector Seals

Add to the front or back of connectors to block out dust, debris, and weather

5 products

Distribution Bars

Route electricity within switchboards and battery banks; also known as bus bars

22 products

Cord Grips

Securely connect cords to enclosures while sealing out dirt and moisture

921 products

Conduit Box Connectors

Attach conduit to a knockout in electrical boxes

273 products

Conduit-to-Conduit Connectors

Join pieces of conduit

59 products

Conduit Locknuts

Secure threaded conduit fittings to knockouts in electrical boxes

10 products

Conduit Bodies

Access wiring to pull, splice, or redirect it

24 products

Outlet Boxes

House electrical components such as on-off switches, receptacles, and dimmer knobs

38 products

Battery Chargers

Charge everything from large-cell to cordless tool to household batteries

7 products

Ethernet Switches

Expand your data network by connecting computers, printers, and servers

20 products

Battery Holders

Create an electrical connection between batteries and contacts to power equipment

3 products

Measuring and Inspecting

Load Cell Junction Boxes

Join multiple load cells to combine their weight measurements

2 products

Fluid Handling

Manifolds

Distribute air or fluid to multiple places from a single source; also called headers

6 products

Thermocouple and RTD Connection Heads

Seal out dust and moisture and allow access to thermocouple and RTD sensor connections

7 products

Building and Machinery Hardware

Grommets

Protect wire, cable, and cords from holes with sharp or rough edges

100 products